AmpComp

A UGen that produces a psychoacoustic amplitude compensation factor for a given frequency.

Implements the formula: (root / freq).pow(exp)

Higher frequencies are normally perceived as louder, therefore AmpComp outputs lower values for them. For example, with default parameters, the pitch C4 (frequency 262 Hz) produces the base factor of 1.0, whereas a pitch one octave up, C5 (or 523 Hz) produces a factor of 0.793719 (an attenuation of -2 dB).

An alternative is AmpCompA that better models the bell-shaped equal loudness contours of the hearing system. Especially note that the output of this UGen can become very high for frequencies much lower than the root parameter.

freq: the frequency in Hertz for which to determine the compensation factor
root: the base frequency corresponding to a compensation factor of 1.0
expon: the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.

See also: AmpCompA

Linear Supertypes

Serializable, Serializable, SingleOut, SomeOut, GE.Lazy, GE, UGenSource[UGenInLike], Expander[UGenInLike], Lazy, Product, Equals, AnyRef, Any

Instance Constructors

new AmpComp(rate: Rate, freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f)

freq
the frequency in Hertz for which to determine the compensation factor
root
the base frequency corresponding to a compensation factor of 1.0
expon
the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
val expon: GE

the exponent determines how steep the compensation curve decreases for increasing frequencies.
the exponent determines how steep the compensation curve decreases for increasing frequencies. In general, the louder a signal is played, the shallower the equal loudness contours become.
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
val freq: GE

the frequency in Hertz for which to determine the compensation factor
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def makeUGens: UGenInLike

Abstract method which must be implemented by creating the actual UGens during expansion.
Abstract method which must be implemented by creating the actual UGens during expansion. This method is at most called once during graph expansion
returns
the expanded object (depending on the type parameter U)

Attributes
protected
Definition Classes
AmpComp → Expander
final def name: String

Definition Classes
UGenSource
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
val rate: Rate

Definition Classes
AmpComp → GE
val root: GE

the base frequency corresponding to a compensation factor of 1.0
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object AmpComp | package ugen

final case class AmpComp(rate: Rate, freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f) extends SingleOut with Product with Serializable

Instance Constructors

new AmpComp(rate: Rate, freq: GE = 261.626f, root: GE = 261.626f, expon: GE = 0.3333f)

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

val expon: GE

def finalize(): Unit

val freq: GE

final def getClass(): Class[_]

final def isInstanceOf[T0]: Boolean

def makeUGens: UGenInLike

final def name: String

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

val rate: Rate

val root: GE

final def synchronized[T0](arg0: ⇒ T0): T0

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Serializable

Inherited from Serializable

Inherited from SingleOut

Inherited from SomeOut

Inherited from GE.Lazy

Inherited from GE

Inherited from UGenSource[UGenInLike]

Inherited from Expander[UGenInLike]

Inherited from Lazy

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped